Organize groups of friends to join forces in helping the environment. It's very easy to get involved with an agency like greenpeace, the sierra club or friends of the earth. Or start small by contacting your local eco organization. Help stop deforestation and global warming by working as a team to encourage people to sign petitions. Start a letter writing campaign to local politicians. Gather up pals to clean up a park. Turn an abandoned lot into a temporary community garden. Use your imagination to see what you and your friends can do today.